PARIS — THE first indication the actress Loubna Abidar had that her life was about to change was on the flight home to Morocco after the premiere of the movie “Much Loved,” in which she plays a prostitute. She was shocked when a flight attendant told her she was “a disgrace for Morocco and Moroccan women.”

Ten months later, Ms. Abidar, 30, is still a celebrity in her homeland, albeit an infamous one who is now in exile. She has received hundreds of hate messages and threats on social media. She is also poised to earn France’s top honor in film — a César — this month.